DL-74CNZ Smart Door Lock 3D Face Recognition

Specification sheet

Compatibility & fitment guide

How to identify the correct unit: locate the reference number stamped on your original component or in the vehicle parts catalogue, then cross-check it against the number below before ordering. Trim and market variants exist for many applications, so the short check is worth the minute before checkout.

How to identify & confirm fitment in 4 steps

1. Locate the OE / reference number on your old part or in the vehicle parts catalogue.
2. Match it to DL-74CNZ shown on this page.
3. Send your VIN and engine code plate so our team runs an exact-fit check.
4. Receive fitment confirmation before we dispatch your order.

Cross-reference coverage for smart door lock fitment is listed above; confirm your VIN before ordering.

Product overview

A direct-fit compatible replacement referenced by DL-74CNZ for the applications listed in the fitment block.

Feature highlights

Buyers searching biometric door lock and smart lock with camera look for the strengths listed here: direct fit, verified reference and wholesale packing.

Materials & construction

Built to the original equipment drawing, the Smart Door Lock uses Carbon Magnesium-Aluminum Alloy and follows the same inspection checkpoints as the reference sample. Tolerances that affect installation are held to the drawing rather than adjusted on the bench.

• Carbon Magnesium-Aluminum Alloy construction for daily and workshop use.
• Surface treated to resist corrosion in road and workshop conditions.
• Dimensional check against the reference sample before packing.

Material and build choices answer the most common smart door lock replacement and smart door lock guide questions from workshop buyers.

Application & fitment

The fitment block above lists the markets and model families this reference is stocked for, so buyers can match demand without re-checking every listing.

Technical insights

Technical background. Most complaints on 3D-face locks trace to three components: the recognition module, the battery pack, and the mortise motor. Slow or failed recognition in strong backlight or after a lens smudge points to the infrared camera window, which needs a soft wipe rather than solvents. Sudden reboots or dropped app connections usually mean a tired lithium pack, confirmed by the low-battery alert that verified models emit. If the deadbolt fails to throw automatically within its half-second window, the 6068 mortise body or its drive motor, not the face algorithm, is the suspect. Persistent false rejection should be solved by re-enrolling the face before any sensitivity adjustment.

Application context. Verified 3D-face lock listings cover door thicknesses from 35 mm up to 100-120 mm, so measure the leaf and confirm the 6068 mortise backset (60 or 70 mm on documented models) before ordering. Mount the exterior unit so the camera sits within the 120-200 recognition height band; glass panels or deep recesses above the door can shade the module and degrade structured-light accuracy. Keep the emergency USB-C or micro-USB port accessible from outside for power-failure recovery. For Wi-Fi models, confirm a 2.4 GHz network reaches the door, since most locks in this class do not join 5 GHz bands.

Deep dive. Battery care dominates the upkeep schedule: recharge the pack every six to twelve months under typical use, and treat the backup key plus emergency power port as an annual test item rather than an afterthought. Wipe the camera window monthly with a dry microfiber cloth; oily films are the most common cause of recognition slowdowns. Apply firmware updates through the vendor app to receive anti-spoofing improvements. Exercise the mechanical key override twice a year and lubricate the cylinder with graphite rather than oil. In coastal or dusty sites, inspect the door gasket so the IP54-to-IP65 sealing that protects the electronics stays intact.

Technical background. Compare four axes before selecting a unit. First, sensing technology: structured-light modules with tens of thousands of infrared dots resist photo and mask spoofing far better than single 2D cameras. Second, capacity and speed: documented models enroll 50-100 faces and verify in 0.5 to 1 second. Third, power: packs from 4,200 to 10,000 mAh separate twelve-month models from six-month ones. Fourth, protection: IP65 suits exposed gates while IP54 fits lobbies. Require a mechanical key fallback, verify the mortise standard matches the existing door preparation, and ask the vendor to document local biometric storage in writing.

Technical background. Two compliance topics are documentable today. On sealing, verified listings declare IP54 for indoor-leaning models and IP65 for weather-exposed units, both defined by the IEC 60529 ingress test. On face data, established vendors store templates as encrypted, non-reversible features in local memory using AES-128 or AES-256, publish GDPR alignment for EU deployments, and avoid cloud biometric processing. A Chinese group standard issued in January 2023, the technical requirement for 3D face recognition application in smart locks, codifies recognition-time and anti-spoofing expectations for the category and is worth citing in procurement specifications.

Application context. Primary buyers are apartment and villa owners who want hands-free entry while carrying groceries or children, plus landlords managing short-term rentals through temporary passcodes. On the commercial side, small offices and boutique hotels use face locks to eliminate key handovers, and property developers now specify them at scale for premium residential projects. Distribution buyers include locksmith wholesalers, smart-home integrators, and door manufacturers bundling locks with new leaves. Retail positioning favors climates within the -20 C to +70 C operating window documented on comparable units, because deep cold shortens lithium battery life noticeably.

Deep dive. For a 3D face recognition smart lock the highest-churn consumables are the rechargeable lithium pack, the silicone weather gasket around the outdoor reader, and the mortise-side rubber pads that stop handle rattle. Plan same-cycle replacements deliberately: when the battery pack reaches the end of its charge-cycle life, also swap the strike-plate screws and the handle return springs, because worn springs force the motor clutch to work harder and shorten its service life. Keeping one gasket and one spare pack per door avoids second visits.

Field note. Units with a built-in lithium pack must ship under the battery provisions carriers apply to power banks, so keep the original carton and protect the terminals during transit. Before mounting, let the lock acclimate indoors if it arrived from a cold depot, since condensation on the 3D camera window degrades face recognition until it dries completely. Long-term storage should be dry, shaded, and around half charge; never shelve the lock for months with a fully depleted pack installed.

Application context. Preparation starts with measuring door thickness and the hand of the door, then confirming your mortise pocket matches the shipped lock body before any cutting begins. Typical installation needs a drill, hole saw, chisel, tape measure, and a Phillips screwdriver; some doors also need a router to recess the faceplate edge. A second person helps hold the outdoor assembly aligned while the indoor module is screwed on, and you should always test the mechanical key backup before finishing.

Application context. Cold weather is the main seasonal constraint: lithium output drops in winter, so recognition and motor response can slow noticeably, and the included mechanical key becomes the practical fallback on the coldest mornings. Direct afternoon sun can push the reader above the sensor's comfort band and force repeated retries, while driving rain tests the outdoor gasket over time. Install the outdoor unit under an overhang where possible, and wipe frost off the 3D lens gently rather than scraping it.

Deep dive. When buying in batches, record the firmware version and mortise model printed on each carton so units installed in one building stay consistent; mixing mortise types across a project complicates spare-key and parts planning later. Ask the supplier to state which certification documents accompany the shipment, such as CE or FCC reports, and run an incoming test on every single unit: enroll a face, measure unlock latency, verify the mechanical key, and log serial numbers against door locations.

Technical background. Configuration differences matter more than appearance: some listings use true 3D structured light, others a single 2D camera with much weaker spoof resistance, so confirm the sensor type in writing before committing. Semi-automatic handle versions differ from fully automatic push-pull bodies, and the mortise case size must match your existing door prep exactly. Watch for app-ecosystem variants of the same model that pair only through a separate gateway hub, and for reversed-hand units that cannot be field-flipped.

Supply note. Recognition height windows documented on 3D-face lock models span about 120-200 , covering children and most adults, and infrared fill light keeps recognition working in darkness and strong backlight.

Workshop note. Verified models in this class ship with rechargeable lithium packs between 4,200 and 10,000 mAh rated for roughly 6-12 months per charge, plus a USB-C or micro-USB emergency power port for lockout recovery.

Workshop note. Ingress protection on documented 3D-face locks ranges from IP54 for indoor-oriented units to IP65 for weather-exposed installations, with operating windows commonly quoted from -20 C to +70 C.

Workshop note. Established vendors store face templates as encrypted, non-reversible local data (AES-128 or AES-256) rather than raw images, a practice aligned with GDPR expectations for biometric access devices.

Supply note. 3D structured light or infrared dual-camera face modules on verified smart lock listings project thousands of infrared dots to build a depth map, distinguish a live face from photos, videos, or masks, and verify in roughly 0.5 to 1 second at a standing distance of about 40-100 .

The engineering notes above compile verified reference, material and application data for aftermarket smart door lock and compatible smart door lock.

Quality & testing

Inspection runs on an AQL sampling plan: incoming material, in-process checkpoints and a final release check are recorded on the batch sheet.

Warranty terms

12 Months limited warranty against manufacturing defects. Coverage applies to correctly installed units; keep the batch date code so any claim is processed against its inspection record. Unlock-method, battery-backup and door-thickness questions are answered by our team before dispatch.

The Vidishi Auto advantage

Smart Door Lock — Smart Door Lock. Supplied under Vidishi Auto with batch traceability and trade-grade packing; volume pricing and private-label options are available on request. Smart door locks are supplied for access-control and building-hardware programs.

Shipping & packaging

We ship worldwide to distributors and garages from China, Dongguan. Each Smart Door Lock is packed in a single-unit export carton. Locks ship in foam-lined cartons with the faceplate and sensor windows protected. Tracked air or sea freight is arranged per order volume.

Bulk quantities of smart door lock supplier and smart door lock bulk order ship in mixed containers from China, Dongguan.

Cross-reference numbers

Catalog numbering for this Smart Door Lock: the primary reference is DL-74CNZ. When a supplier catalog lists superseded or regional formats, match on the numeric core of the code rather than the prefix, then confirm the physical fit.

Catalog cross-references for smart door lock catalog resolve to DL-74CNZ.

Frequently asked questions

Further video door lock questions are answered by the trade desk within one business day.

Compliance disclaimer

Vidishi Auto is an independent supplier. This is an aftermarket compatible replacement, not a genuine OEM part. Brand names are trademarks of their respective owners and are used only to identify fitment.

Wholesale & support

Wholesale terms are quoted per market: volume breaks, mixed-SKU containers and private-label options are all handled by the trade desk. Door-thickness, mounting-plate and app-interface documentation is available on request.

Trade desk replies with quotation, MOQ and lead time in one business day.

Enquiries about wholesale smart door lock and smart door lock price receive quotations within one business day.

Mounting & access notes

Smart locks are matched to the door build; the mounting scope below is confirmed before dispatch.

• Pre-dispatch checks: Carbon Magnesium-Aluminum Alloy construction is verified against the reference sample before packing.

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• Door thickness and mounting-plate scope are confirmed against your door before dispatch.
• Unlock methods and backup-power options follow the published listing.

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• Faceplates and sensor windows are protected in foam-lined cartons.

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Power & access options

Power and access options are matched to the door build; the scope below is confirmed before dispatch.

• Configuration checks: the supplied configuration is confirmed against your order before dispatch.

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• Battery type and backup-power scope follow the published listing.
• Access-method options are confirmed with the quotation.

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• Emergency-key and override scope is confirmed before dispatch.

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